Reporter, WA Today

While at least one betting outlet has made predictions about the outcome of the West Australian election, a political analyst said it was still early days.

Curtin University's Professor Harry Phillips said he did not think the odds of $6 for a Labor win and $1.10 for a Liberal win were realistic.

As much as 5 to 10 per cent of the electorate could change their mind on election day if something happened.

"I'd think it'd be closer than that," he said.

Professor Phillips also pointed out that the likelihood of a Liberal victory, as predicted by Sportsbet odds, could change.

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"Sometimes a decisive issue comes late in campaigning," he said.

"There's still five weeks to go and there's evidence suggests that 25 per cent of the electorate is prepared to change their mind and as much as 5 to 10 per cent could change their mind on the day if something happened."

Professor Phillips said while he expected the Coalition to be the favourite, he would think the odds would be closer than those listed on Sportsbet.

His odds would be $2.70 for a Labor win and $1.90 for a coalition win.

Sportsbet is also taking bets on whether the Liberals would win a majority of seats in their own right, as opposed to gaining a majority with the assistance of numbers from the Nationals who are part of their coalition.

Sportsbet will pay $1.67 for those who bet that the WA Liberals will win a majority of seats in their own right and $2.10 for those who bet that they will not.

Mr Phillips said it was not an easy call.

"I'd be a little closer than that, maybe $1.90 for yes and $2.10 for no," he said.

Either way, Mr Phillips said it was likely that the Liberals would maintain their coalition with the Nationals.

"The most likely scenario is that if the Liberals won in their own right, they'd still have an alliance," he said.

"Colin Barnett has said on a couple of occasions, even if the Liberals could govern in their own right, he'd still include the Nationals in order to help pass legislation."